° 1914 ] SwARTH, California Forms of Psaltriparus. 517 



Remarks. — There are at hand three specimens from Baird, Shasta 

 Count}^, CaUfornia, the type locality of californicus. Judging from 

 the available material it seems unfortunate that a Shasta County 

 specimen was selected as the type of the paler colored inland race 

 of the California bush-tit, for the locality is at the extreme edge of 

 the territory occupied by the subspecies, and individuals from this 

 point do not exliibit the best manifestation of the characters of the 

 form. Birds taken but a short distance west of the type locality 

 of californicus must perforce be assigned to the subspecies minimus,. 

 while topotypes of californicus are more of the nature of intergrades 

 beween the pale inland and dark coast races. This view is quite 

 in accord with the recognized faunal position of the Shasta and 

 Siskiyou regions (see Merriam, 1899; Anderson and Grinnell, 

 1903). 



Sacramento Valley (specimens from Tehama, Glenn, Butte,. 

 Colusa, Sutter, Yolo, Yuba, Solano, and Sacramento counties). 

 Birds from the Sacramento Valley may be regarded as unquestion- 

 ably representative of the pale, interior subspecies. They are 

 distinctly grayer than birds from Shasta and Siskiyou counties, 

 to the northward, and are closely similar to Sierra Nevada birds. 

 Juveniles from the two regions (Sacramento Valley and Sierra 

 Nevada) are, in fact, practically indistinguishable; adults from the 

 former point are perhaps a trifle darker, and are more distinctly 

 vinaceous on the flanks. 



Segregated series from the eastern and western sides of the 

 Sacramento Valley do not show any correlated differences. In 

 other words, although the Sacramento Valley series as a whole 

 tends slightly toward minimus, compared with the exceedingly gray 

 Sierra birds, there is no perceptible darkening from the eastern to 

 the western sides of the valley. Eight April adults from Sutter 

 County (Sacramento Valley) are slightly darker than three birds 

 from Raymond, Madera County (in the western foothills of the 

 more southern Sierras), also taken in April. These series contain 

 about the best seasonably comparable adults available from the two 

 regions, though there are plenty of juveniles and old birds in worn 

 plumage, and tend to confirm the relative positions above accorded 

 the birds from these sections. 



Warner Mountain District (specimens from Sugar Hill; Dry 



